LOS ANGELES � Seattle Mariners third baseman Adrian Beltre will undergo surgery to have bone spurs removed from his troublesome left shoulder.

Beltre�s non-throwing shoulder was operated on in September for the same reason and has given him severe pain all season. The two-time Gold Glove winner made his decision before Saturday night�s 5-1 victory over the Dodgers, and he could be sidelined for six to eight weeks.
�I don�t think I�ll be able to help the team the way I want to because of the way I�m feeling right now,� said Beltre, who was 1 for 5. �It�s gotten to the point where it�s really painful. There were a couple of pitches tonight that I couldn�t get to because of the shoulder, so I think it�s probably better to go fix it and come back 100 percent.�
Manager Don Wakamatsu said after the game that Beltre would be in the lineup again in Sunday�s series finale if he�s up to it.
�He�s played with a lot of pain,� Wakamatsu said. �He�s a guy who brings a lot of presence to our clubhouse and a lot of presence to that lineup. And over the last three or four weeks, he�s really started to swing the bat. So we�re going to miss him a lot.�
Beltre, who also had surgery on his left thumb in September, is batting .259 with five homers and 30 RBIs. He�ll be going on the disabled list for the third time in his 12-year career and first time in five seasons with the Mariners.
Beltre, a free agent at the end of the season, established career highs in 2004 with a .334 average, 121 RBIs and a major league-leading 48 homers for the Dodgers despite playing the entire season with bone spurs in his left ankle. The home run total tied Mike Schmidt�s 1980 record for third baseman. He signed a five-year, $64 million with Seattle a few months later.
Beltre was held out of last Sunday�s 9-3 victory at Arizona by Wakamatsu, and X-rays on Tuesday confirmed that the bone spurs were back. He was 0 for 4 in Seattle�s 8-2 loss on Friday night.